A nonlinear measurement and sound quality tuning system for loudspeaker systems
A loudspeaker, non-linear technology, applied in the direction of electrical components, etc., to achieve the effect of improving harmony
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Embodiment 1
[0065] Such as Figure 5 As shown, the loudspeaker system nonlinear distortion and sound quality evaluation module in the present invention includes the generation of nonlinear distortion test signals, the transmission and reception of test signals, the spectrum analysis of test signals, the analysis display and data storage of nonlinear distortion evaluation results.
[0066] The hardware circuit implementation of the speaker system nonlinear distortion and sound quality evaluation module includes the following parts:
[0067] 1.1. Input signal: 1 Mic input signal enters the nonlinear distortion evaluation module;
[0068] 1.2. Main functions: This module provides a measurement mode for harmonic composite sound test signals: send harmonic composite sound signals to a certain speaker system to be tested successively, and perform harmonic spectrum calculation on the harmonic composite sound collected by the microphone to generate Corresponding harmonic modulation data sheet; ...
Embodiment 2
[0076] Such as Figure 6 Shown, the hardware circuit realization of the nonlinear sound quality tuning module of loudspeaker system in the present invention comprises the following parts:
[0077] 2.1. Input signal: According to the selection of two function modes of this module, one channel of actual audio signal is sent to the tuning sub-module of short-time Fourier transform, or the tuning sub-module of dynamic harmonic equalization, and only one of them can be selected. .
[0078] 2.2. Main functions: After 1 channel of actual audio signal enters the nonlinear sound quality tuning module, it will output 1 channel of audio signal after corresponding real-time processing and calculation. The real-time processing calculation process includes a sound quality tuning mode based on short-time Fourier transform analysis of the input audio stream signal, harmonic spectrum correction and Fourier inverse transform synthesis.
[0079] 2.3. Output signal: 1 channel output corresponds...
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